 
<!-- index.html -->
<!DOCTYPE html>
<html>
  <head>
    <title>Users</title>
  </head>
 
  <body>
    <h1>Users</h1>
    <ul id="users"></ul>
    <input
      id="input"
      type="text"
      placeholder="New User">
    </input>
    <button id="submit">Submit</button>
 
    <script src="users.js"></script>
    <script src="dom.js"></script>
    <script>
      console.log('windowwww',window)
    </script>
  </body>
</html>
 